israel and hamas exchanges more fire overnight. eamon did great duty on nightly with brian williams and he's joining us from the gaza trip. >> let me start off with some interests developments. an audio recording was released saying the organization is still determined, will remain defiant vowing to continue the fight for the liberation of all palestinian lands. this is significant because there was some speculation that he himself may have been actually injured in an attack earlier this week p. the leader of the military wing was the man killed on wednesday. so still very much in command of its forces and the leader vowed to continue the fight. it has targeted about 100 different targets in the gaza strip, palestinian officials say the death toll from the seven days of fighting has reached 115 palestinians with a third being children alone. so you get a sense really that the situation here is still very volatile on the ground despite the flurry of diplomatic activity taking place in cairo. hillary clinton will be arriving later th